Datasheet > 33742_08

33742_08

更新时间： 2022-04-23 23:00:11

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飞思卡尔 - FREESCALE		/
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System Basis Chip with Enhanced High Speed CAN Transceiver

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33742_08 数据手册

Document Number: MC33742

Rev. 11, 6/2008

Freescale Semiconductor

Advance Information

System Basis Chip with

Enhanced High Speed CAN

Transceiver

33742

33742S

The 33742 and the 33742S are SPI-controlled System Basis Chips

(SBCs) combining many frequently used functions along with a CAN 2.0-

compliant transceiver, used in many automotive electronic control units

(ECUs). The 33742 SBC has a fully protected fixed 5.0V low dropout

internal regulator with current limiting, over-temperature pre-warning,

and reset. A second 5.0V regulator can be implemented using external

pass PNP bipolar junction pass transistor driven by the SBC’s external

V2 sense input and V2 output drive pins.

SYSTEM BASIS CHIP

The SBC has four main operating modes: Normal, Standby, Stop, and

Sleep mode. Additionally there is an internally switched high side power

supply output, four wake-up inputs pins, a programmable window

watchdog, interrupt, reset, and a SPI module for communication and

control. The high speed CAN A and B transceiver is available for inter-

module communication.

DW SUFFIX

EG SUFFIX (PB-FREE)

98ASB42345B

EP SUFFIX

(PB-FREE)

98ASA10825D

48-PIN QFN

28-PIN SOICW

Features

• 1.0Mbps CAN transceiver bus interface with bus diagnostic capability

• SPI control at frequencies up to 4.0Mhz

• 5.0V low dropout voltage regulator with current limiting, over-

temperature prewarning, and output monitoring and reset

• a Second 5.0V regulator capability using an external series pass

transistor

• Normal, Standby, Stop, and Sleep modes of operation with Low sleep

and Stop mode current

• A high side (HS) switch output driver for controlling external circuitry.

• Pb-free packaging designated by suffix code EG and EP

ORDERING INFORMATION

Temperature

Range (T_A)

Device

Package

MC33742DW/R2

MCZ33742EG/R2

MC33742SDW/R2

MCZ33742SEG/R2

MC33742EP/R2

28 SOICW

48 QFN

-40°C to 125°C

V_PWR

33742

5.0V

VDD VSUP

V2CTRL

RST

MCU

V_PWR

SCLK

SPI

MOSI

MISO

MOSI

MISO

Safe

WDOG

Circuitry

INT

ECU Local

Circuitry

Twisted

TXD

RXD

CANH

CANL

GND

CAN Bus

Pair

GND

Figure 1. 33742 Simplified Application Diagram

* This document contains certain information on a new product.

Specifications and information herein are subject to change without notice.

12 3 4 5 6 7...70

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